434.

TANA

water. Gently pour off the water, and leave the residue at thebottom of the vessel to dry. When dry, calcine it in a furnace for twohours with a strong fire. Take a pound of this calcined talc, andreduce it to a powder, with two ounces of muriate of ammonia ; putthe whole in a glass bottle, and set it in a damp place. All the talcwill spontaneously dissolve, and then pour off the liquor gently,taking great care not to disturb it. The liquor is as clear and asbright as a pearl.

Oil of Talc. Take one part of Venetian talc and two parts of calcinedborax, perfectly pulverize and mix these substances, put them into acrucible, cover it and place it in a furnace. Expose it for an hour toa very violent heat, and at the end of that time the mixture w 7 illbecome a glass of a greenish yellow colour. Reduce this to powder,then mix it with two parts of subcarbonate of potass, and again meltthe whole in a crucible. Place the mass thus obtained in a cellar,upon an inclined piece of glass, with a vessel underneath it, and in ashort time the whole will be converted into a liquid, in which thetalc will be perfectly dissolved.Tamarindi Pulpa. L. E. D. P. Tamarindus Indica. This is a pre-served pulp, without smell, and of an acidulous, sweetish taste,grateful, cooling, and laxative.

Contains citric acid, malic acid, supertartrate of potass, sugar, gum, mu-cilage, and other vegetable principles.

Contaminated with copper from having been prepared in copper vessels.To detect this put the blade of a knife into the tamarinds, whichwill be quickly covered with copper, when it is present.

Incompatible with infusion of senna (unless macerated with it), thoughoften prescribed with it, with resinous purgatives, and with thetartrites and acetates of soda and potass.

Medicinally it is given in doses of 5J to 5ij, with cassia or manna, butis oftener used to made tamarind-whey, by boiling §ij with a quartor less of milk and straining, as a cooling drink in fevers of the biliousor putrid kind.Tamarix Gallica. P. Tamarisk. The bark is hitter and astringent.Tamus Communis. P. Black Bryony. The root is aperient, diuretic,and emmenagogue. (Lobel.) Externally it is a good application inform of cataplasm to bruises. (Chomel.) Quite a specific for ablack eye.Tanacetum. E. D. P. Tansy. Tanacetum vulgare. A common nativeplant of a strong, pungent, bitter taste and peculiar smell.

Medicinally it is tonic, stimulant, deobstruent, and vermifuge, in dosesof ^ss to 5j of the powder, but is more commonly given in form ofinfusion, for dyspepsia, gout, worms, &c.